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We customized the item inquiry mobile device menu item with configuration to do this. We have a specific document routing layout and added a toggle for print hangtag and a field with a drop down list of valid document routing layouts to use. We also added a printing limit because we had a few people scan the next barcode instead of entering the quantity of labels to print. We had to clear our print queues because we didn't need 9 billion hangtags.
This is a bug. When you have an app with a guid below the app id of the app where the business manager role exists, it will take the first profile it finds based on the app id instead of always using the default profile. It even ignores the fact that a profile is inactive, it just takes the first it finds in table All Profile.